Subject :NSO Class : Class 4
Subject :NSO Class : Class 3
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Subject :NSO Class : Class 3
Ans 2:
Class : Class 4
The answer is (B) as the book is under gravitational force that's why the book is on the table.
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Subject :NSO Class : Class 5
Ans 3:
Class : Class 6
Ans is C because due to oil spill fishes die because it happens in water. Also, aquatic birds get covered with black coating because of that they can't breathe and they die.
Ans 4:
Class : Class 6
answer is B because Oil spill is the condition when mineral oil or petroleum oil being carried on a ship gets spilled in the sea due to some reason. This causes death of aquatic organisms. Oil gets coated on feathers of aquatic birds making them unable to fly and to regulate their body temperatures. This causes death of the birds.
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Subject :NSO Class : Class 4
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Subject :NSO Class : Class 3
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Subject :NSO Class : Class 5
Ans 1:
Class : Class 5
THE CORRECT ANSWER IS C, BECAUSE BLACK GOLD IS ANOTHER NAME FOR CRUDE OIL OR PETROLEUM .
Ans 9:
Class : Class 8
I think it should be A as it says that option C is Black Gold is another name for granite, but Black Gold is another name for petroleum.
Ans 10:
Class : Class 10
In my case, I feel that (A)is a suitable answer. But the correct option is (C). Why?
Ans 12:
Class : Class 4
black gold is another name for petroleum or crude oil but according to SOF it is granite I think there is some error in this question from SOF
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Subject :NSO Class : Class 7
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Subject :NSO Class : Class 6
Ans 2:
Class : Class 6
Groundwater is safe for drinking but is not free of soluble impurities and that is why we boil it, so the correct option is (C)
Ans 3:
Class : Class 6
groundwater sometimes have heavy metals such as lead and arsenic dissolved in them and hence is always not safe for drinking
Ans 4:
Class : Class 8
Some dissolved salts in water is essential for human body and groundwater is free from suspended impurities but it contains soluble things, hence the option is C.
Ans 5:
Class : Class 3
Let’s check whether the given statements are correct or incorrect:Statement 1: Groundwater is safe for drinking. ----- Correct.Statement 2: Groundwater is free from soluble impurities. ----- Correct.Groundwater is water that accumulates underground. Groundwater is safe for drinking, because it is naturally filtered through layers of rocks and soil. So it is free from soluble impurities. That means Statement 1 is correct, and Statement 2 is the correct explanation of Statement 1.Hence, the right answer is Option A.
Ans 7:
Ans 8:
Class : Class 3
Let’s check whether the given statements are correct or incorrect:Statement 1: Groundwater is safe for drinking. ----- Correct.Statement 2: Groundwater is free from soluble impurities. ----- Correct.Groundwater is water that accumulates underground. Groundwater is safe for drinking because it is naturally filtered through layers of rocks and soil. So it is free from soluble impurities. That means Statement 1 is correct, and Statement 2 is the correct explanation of Statement 1.Hence, the right answer is Option A.
Ans 9:
Class : Class 8
Answer is option'D'. Neither of the statements are correct. And SOF World, Please listen to our comments and reply to it and rectify your mistakes quickly,ASAP. Iam not here to scold you, but trying to advise you. So please, from the heart of all the students who are commenting(including me), rectify all your mistakes ASAP( AS SOON AS POSSIBLE)!!!!!!!!!!!!
Ans 10: